[DUPLICATE] Different between a++ and ++a in js

Answer 1

I don't know js, but from my c knowledge I can say

a++ increments the value of variable a after processing the current statement.

++a increments the value of variable a before processing the current statement.
e.g.

a=10
x=a++
gives x=10, a=11

a=10
x=++a
gives x=11, a=11

Answer 2

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